A Bandai Namco teaser site is live with the clue "Ray Gigant." The title will be revealed in seven days, perhaps sooner if it's part of next week's issue of Famitsu.
Siliconera found a trademark for Little Tail Story registered by Namco Bandai. The publisher also filed a trademark for "dog and cat in an RPG" which reminds us of Solatorobo and Tail Concerto.
Every year, Namco Bandai holds a festival for Tales of fans. Tales of Festival 2014 is scheduled for May 31, 2014 and June 1, 2014 at the Yokohama Arena.
One Piece: Unlimited World Red hasn't been announced for the West yet and most of the One Piece games are making it overseas. Maybe it's for the 3DS hunting game?